The hydrolysis of copolymers of maleic anhydride with styrene, n-buty1methacrylate and terpolymers has ben sutdied. The valtus of pK_(a1) and pK_(a2) of hydrolysedcopolymers are found.

• 论述了顺丁烯二酸酐和苯乙烯、甲基丙烯酸丁酯的共聚物和三元共聚物水解的研究结果，确定了水解共聚物的pK_(a1)和pK_(a2)值。